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  • 专利标题:   Composition useful for preparing negative electrode of lithium-ion battery for electric vehicle, hybrid electric vehicle, or energy storage cell comprises carbonaceous particulate material comprised of synthetic graphite particles.
  • 专利号:   WO2021069517-A1, WO2021069517-A8, CN114514197-A, KR2022077145-A, EP4041679-A1, US2022384811-A1, JP2022552826-W
  • 发明人:   SPAHR M, TAKI H, MORIOKA H, WANG X, YAHIRO T, LONG B, SPAR M, WANG S, TSUTOMU Y A
  • 专利权人:   IMERTECH, IMER YTECH CO LTD, IMERTECH, IMERTECH SAS
  • 国际专利分类:   C01B032/21, H01M010/052, H01M010/0562, H01M004/02, H01M004/133, H01M004/1393, H01M004/36, H01M004/587, H01M004/62, H01M010/0525, H01M004/583, C01B032/20
  • 专利详细信息:   WO2021069517-A1 15 Apr 2021 C01B-032/21 202135 Pages: 36 English
  • 申请详细信息:   WO2021069517-A1 WOEP078159 07 Oct 2020
  • 优先权号:   EP306305, CN80070410, KR715210

▎ 摘　　要

NOVELTY - Composition comprises: at least one carbonaceous particulate material comprised of synthetic graphite particles (SG) having a less than or equal to 4 m2/g Brunauer, Emmett and Teller-specific surface area (BET SSA); and at least one carbonaceous particulate material comprised of natural graphite particles coated with non-graphitic carbon (cNG) and having less than or equal to 8 m2/g BET SSA, where content of the cNG particles is 5-75%, or 5-65% by weight of the total weight of the composition. USE - The composition is useful for preparing negative electrode of a lithium-ion battery for electric vehicle, a hybrid electric vehicle, or an energy storage cell, natural graphite coated with non-graphitic carbon (cNG) for preparing a composition suitable for being used as an active material in a negative electrode, and natural graphite coated with non-graphitic carbon as a carbonaceous additive to increase the energy density and charge rate performance of a lithium-ion battery while maintaining the power density of the cell compared to a cell with an anode absent the carbonaceous additive (all claimed). ADVANTAGE - The batteries: have fast charging performance while not negatively affecting the other relevant functional properties of the battery; and have high energy density and specific energy combined with a high power performance due to an average cell voltage of 3.5 V and the light weight electrode materials. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) slurry, comprising composition in a liquid, where liquid is water or a water/alcohol mixture; (2) making the composition, comprising mixing a synthetic graphite (SG) with a natural graphite coated with non-graphitic carbon, optionally in the presence of a liquid such as water; (3) electrode, comprising composition as active material; (4) lithium-ion battery, comprising composition as active material in the anode of battery; and (5) electric vehicle, a hybrid electric vehicle, or an energy storage cell comprising a lithium-ion battery.